feat(library/data/vector): add helper lemmas for proving v == w when v and w are vectors
feat(library/data/vector): add helper lemmas for proving v == w when v and w are vectors

levnach/lean,Kha/lean,soonhokong/lean-windows,eigengrau/lean,avigad/lean,eigengrau/lean,digama0/lean,leanprover-community/lean,leodemoura/lean,soonhokong/lean,levnach/lean,fpvandoorn/lean2,Kha/lean,fpvandoorn/lean2,leanprover/lean,soonhokong/lean-osx,javra/lean,rlewis1988/lean,fpvandoorn/lean,rlewis1988/lean,avigad/lean,rlewis1988/lean,fgdorais/lean,soonhokong/lean,soonhokong/lean-osx,eigengrau/lean,leanprover/lean,soonhokong/lean-osx,c-cube/lean,fpvandoorn/lean,leanprover-community/lean,leodemoura/lean,leodemoura/lean,c-cube/lean,UlrikBuchholtz/lean,rlewis1988/lean,c-cube/lean,rlewis1988/lean,javra/lean,fpvandoorn/lean2,fpvandoorn/lean,soonhokong/lean-windows,fpvandoorn/lean,leodemoura/lean,digama0/lean,johoelzl/lean,leanprover/lean,UlrikBuchholtz/lean,leanprover/lean,leanprover-community/lean,johoelzl/lean,johoelzl/lean,dselsam/lean,johoelzl/lean,javra/lean,soonhokong/lean-windows,rlewis1988/lean,fgdorais/lean,javra/lean,sp3ctum/lean,leodemoura/lean,fpvandoorn/lean,leanprover/lean,leanprover-community/lean,soonhokong/lean-osx,sp3ctum/lean,Kha/lean,Kha/lean,digama0/lean,levnach/lean,sp3ctum/lean,avigad/lean,dselsam/lean,soonhokong/lean-windows,fpvandoorn/lean,leanprover-community/lean,leanprover-community/lean,leanprover/lean,UlrikBuchholtz/lean,dselsam/lean,javra/lean,digama0/lean,fgdorais/lean,digama0/lean,UlrikBuchholtz/lean,soonhokong/lean,soonhokong/lean,c-cube/lean,dselsam/lean,levnach/lean,c-cube/lean,Kha/lean,soonhokong/lean,avigad/lean,fgdorais/lean,levnach/lean,soonhokong/lean-windows,soonhokong/lean-osx,dselsam/lean,eigengrau/lean,leodemoura/lean,fgdorais/lean,dselsam/lean,eigengrau/lean,johoelzl/lean,sp3ctum/lean,fpvandoorn/lean2,sp3ctum/lean,avigad/lean,UlrikBuchholtz/lean,fpvandoorn/lean2,fgdorais/lean,avigad/lean,Kha/lean,digama0/lean,johoelzl/lean